Issue |
EPL
Volume 85, Number 2, January 2009
|
|
---|---|---|
Article Number | 25001 | |
Number of page(s) | 5 | |
Section | Physics of Gases, Plasmas and Electric Discharges | |
DOI | https://doi.org/10.1209/0295-5075/85/25001 | |
Published online | 21 January 2009 |
Hall magnetohydrodynamics near an X-type magnetic neutral line
Los Alamos National Laboratory - Los Alamos, NM 87545, USA
Received:
26
August
2008
Accepted:
10
December
2008
Hall magnetohydrodynamics (MHD) near a two-dimensional (2D) X-type magnetic neutral line is considered. The Hall effects are shown to be able to sustain the hyperbolicity of the magnetic field (and hence a more open X-point configuration) near the neutral line in the steady state. This result is predicated on considering the steady Hall MHD state as the temporal asymptotic limit of the corresponding time-dependent problem. For the time-dependent Hall MHD problem, the Hall effects are shown to have a negligible impact on the current-sheet formation process near the X-type magnetic neutral line at short times but, subsequently, to quench the finite-time singularity exhibited in ideal MHD and, hence to prevent the plasma collapse, in consistency with the sustenance of the hyperbolicity of the magnetic field in the corresponding steady problem.
PACS: 52.35.Vd – Magnetic reconnection
© EPLA, 2009
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.